Getting the most out of your engine shouldn’t mean hours staring at logs and spreadsheets, or making educated guesses. DigiTune GTS takes your datalogs and shows you exactly what your engine needs — so you spend less time tuning and more time driving.
See what your engine is actually doing
GTS loads your log files and maps, calculates the fuel requirement at every point in your log, and plots the results on a graph for each row and column of your fuel table. Instead of trying to mentally connect what happened on a run to where it sits in your map, you can see it all clearly in one place. The software shows you which cells need attention and by how much — and adjustment is as simple as clicking and dragging the table curve to match the data.
No more cross-referencing logs and tables in separate windows. No more guesswork.
Accurate, not approximate
Dyno trial-and-error fits to whatever noise you’re seeing in the moment. Time-based log plots smear data across cells. GTS maps every datapoint to its exact RPM/load cell with full compensation — and lets you align your table columns to the engine’s natural resonant peaks. Insights live tuning simply can’t see.
From log to tune in minutes
AutoTune lays down an accurate baseline fuel table in seconds. Scan the overlay against the scatter, and where something looks off, drag the line, type values, or nudge with hotkeys. Fast first pass, human judgement where it counts.
Every map, every condition
Fuel, ignition, idle, boost, knock thresholds and temperature compensation — six tuning domains, one workflow. Combine warm-up sessions and logs from different temperatures and loads, and GTS accounts for every condition across the whole map.
What you can tune with GTS
- Fuel tables — the core of GTS. Every run you’ve logged is processed and built into an accurate picture of how your engine is breathing across the rev range. Dial in your fuelling with confidence.
- VE table column alignment — GTS reveals where your engine’s resonance peaks actually sit, so you can align your table columns properly. Nearly impossible to spot in real-time.
- Idle and boost control — use logged data to refine idle and boost duty cycles through calculated plots, instead of trial and error.
- Knock thresholds — raw knock sensor data plotted against RPM with ECU-detected events highlighted. Set background-noise thresholds from what’s actually happening, not guesswork.
- Ignition timing — use knock data to adjust timing tables, instead of leaning on real-time correction every run.
- Temperature compensation — load warmup logs or multiple sessions from different conditions; GTS accounts for intake-air and coolant-temperature effects across the whole map.
Works with your ECU
- Haltech Elite / Nexus
- Link G4, G4+, G4X, G5
- Motorsport Electronics ME221 (Gen 1 & 2), ME442, ME360
- Megasquirt MS2 / MS3
Beta support
- ECUMaster EMU (Classic & Black)
- MaxxECU
- MoTeC M1
- Holley EFI (HP / Dominator)
- rusEFI
Open to adding more ECUs — contact us if yours isn’t listed.
Licensing
30-day trial so you can see the difference before you commit. Paid licences come in personal (limited to 3 ECUs/vehicles) and commercial options. Multi-licence discounts available on request — contact us.